求解密<?php $_F=__FILE__;$_X=' 源码已贴出

<?php $_F=__FILE__;$_X='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';eval(base64_decode('JF9YPWJhc2U2NF9kZWNvZGUoJF9YKTskX1g9c3RydHIoJF9YLCcxMjM0NTZhb3VpZScsJ2FvdWllMTIzNDU2Jyk7JF9SPWVyZWdfcmVwbGFjZSgnX19GSUxFX18nLCInIi4kX0YuIiciLCRfWCk7ZXZhbCgkX1IpOyRfUj0wOyRfWD0wOw=='));?>

首先解密eval(base64_decode('JF9YPWJhc2U2NF9kZWNvZGUoJF9YKTskX1g9c3RydHIoJF9YLCcxMjM0NTZhb3VpZScsJ2FvdWllMTIzNDU2Jyk7JF9SPWVyZWdfcmVwbGFjZSgnX19GSUxFX18nLCInIi4kX0YuIiciLCRfWCk7ZXZhbCgkX1IpOyRfUj0wOyRfWD0wOw=='));

结果为:

eval('$_X=base64_decode($_X);$_X=strtr($_X,'123456aouie','aouie123456');$_R=ereg_replace('__FILE__',"'".$_F."'",$_X);eval($_R);$_R=0;$_X=0;')

运行上述代码

$_X=base64_decode($_X);//执行后$_X的值为

?><d4v cl1ss="cl51r"></d4v>
<d4v 4d="f22t5r">
<d4v 4d="f22t5rm14n">
<1 4d="f22t5rl2g2" hr5f="<?php bl2g4nf2('3rl'); ?>" t4tl5="<?php bl2g4nf2('n1m5'); ?>"></1>
<?php 5ch2 str4psl1sh5s(g5t_2pt42n('cr55k22_f22t5rl4nkc2d5')); ?></br><?php 5ch2 c2m4cpr5ss_c2pyr4ght(); ?> <1 hr5f="<?php 5ch2 h2m5_3rl( '/' ) ?>" t4tl5="<?php 5ch2 5sc_1ttr( g5t_bl2g4nf2( 'n1m5', 'd4spl1y' ) ); ?>" r5l="h2m5" t1rg5t="_bl1nk"><?php 5ch2 5sc_1ttr( g5t_bl2g4nf2( 'n1m5', 'd4spl1y' ) ); ?></1> - P2w5r5d by <1 hr5f="http://www.w2rdpr5ss.2rg/" r5l="n2f2ll2w" t1rg5t="_bl1nk">W2rdPr5ss</1> 1nd <1 hr5f="http://www.cr55k22.c2m/" t1rg5t="_bl1nk">Cr55K22</1><?php 4f (g5t_2pt42n('cr55k22_b541n') == 'D4spl1y') { ?> - <?php 5ch2 str4psl1sh5s(g5t_2pt42n('cr55k22_b541nh12')); ?><?php } 5ls5 { } ?><?php 4f (g5t_2pt42n('cr55k22_tj') == 'D4spl1y') { ?> - <?php 5ch2 str4psl1sh5s(g5t_2pt42n('cr55k22_tjc2d5')); ?><?php } 5ls5 { } ?>
</d4v>
 </d4v>
<?php wp_f22t5r(); ?>
<scr4pt typ5="t5xt/j1v1scr4pt" src="<?php bl2g4nf2('t5mpl1t5_d4r5ct2ry'); ?>/c2mm5nts-1j1x.js"></scr4pt>
<scr4pt typ5="t5xt/j1v1scr4pt" src="<?php bl2g4nf2('t5mpl1t5_d4r5ct2ry'); ?>/cr55k22.m4n.js?v6.o"></scr4pt>
</b2dy>
</html>

$_X=strtr($_X,'123456aouie','aouie123456');//执行后$_X的值为

?><div class="clear"></div>
<div id="footer">
<div id="footermain">
<a id="footerlogo" href="<?php bloginfo('url'); ?>" title="<?php bloginfo('name'); ?>"></a>
<?php echo stripslashes(get_option('creekoo_footerlinkcode')); ?></br><?php echo comicpress_copyright(); ?> <a href="<?php echo home_url( '/' ) ?>" title="<?php echo esc_attr( get_bloginfo( 'name', 'display' ) ); ?>" rel="home" target="_blank"><?php echo esc_attr( get_bloginfo( 'name', 'display' ) ); ?></a> - Powered by <a href="http://www.wordpress.org/" rel="nofollow" target="_blank">WordPress</a> and <a href="http://www.creekoo.com/" target="_blank">CreeKoo</a><?php if (get_option('creekoo_beian') == 'Display') { ?> - <?php echo stripslashes(get_option('creekoo_beianhao')); ?><?php } else { } ?><?php if (get_option('creekoo_tj') == 'Display') { ?> - <?php echo stripslashes(get_option('creekoo_tjcode')); ?><?php } else { } ?>
</div>
 </div>
<?php wp_footer(); ?>
<script type="text/javascript" src="<?php bloginfo('template_directory'); ?>/comments-ajax.js"></script>
<script type="text/javascript" src="<?php bloginfo('template_directory'); ?>/creekoo.min.js?v1.3"></script>
</body>

$_R=ereg_replace('__FILE__',"'".$_F."'",$_X);//将$_X中的字符串__FILE__替换为当前文件的路径,并用单引号引起来,原字符串并无可替换内容,故不变

eval($_R);//将上述替换后的内容执行

$_R=0;

$_X=0;

加密的代码等价于如下代码

<div class="clear"></div>
<div id="footer">
<div id="footermain">
<a id="footerlogo" href="<?php bloginfo('url'); ?>" title="<?php bloginfo('name'); ?>"></a>
<?php echo stripslashes(get_option('creekoo_footerlinkcode')); ?></br><?php echo comicpress_copyright(); ?> <a href="<?php echo home_url( '/' ) ?>" title="<?php echo esc_attr( get_bloginfo( 'name', 'display' ) ); ?>" rel="home" target="_blank"><?php echo esc_attr( get_bloginfo( 'name', 'display' ) ); ?></a> - Powered by <a href="http://www.wordpress.org/" rel="nofollow" target="_blank">WordPress</a> and <a href="http://www.creekoo.com/" target="_blank">CreeKoo</a><?php if (get_option('creekoo_beian') == 'Display') { ?> - <?php echo stripslashes(get_option('creekoo_beianhao')); ?><?php } else { } ?><?php if (get_option('creekoo_tj') == 'Display') { ?> - <?php echo stripslashes(get_option('creekoo_tjcode')); ?><?php } else { } ?>
</div>
 </div>
<?php wp_footer(); ?>
<script type="text/javascript" src="<?php bloginfo('template_directory'); ?>/comments-ajax.js"></script>
<script type="text/javascript" src="<?php bloginfo('template_directory'); ?>/creekoo.min.js?v1.3"></script>
</body>
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